The machines listed in the table are intended for operation with a public power supply with a net‐
work impedance at the transfer point (house connection) of maximum Z
max.
[Ohm].
The operator must ensure that the machines are only connected to a network that meets these re‐
quirements. If necessary, ask the local electricity company for the value of the network impedance.
SK 22
SK 25
—
Anticipated number of
start-stop cycles per hour
15
15
—
Highest permissible
mains impedance*
Z
max.
[Ohm]
0.046
0.027
—
*Specification related to the sum of impedances in external and neutral lines.
Tab. 26 Network conditions at 400V / 3 / 50Hz
Machines with current consumption 16 A...≤75 A comply fully with IEC 61000-3-12.
2.14.2 Mains frequency: 60 Hz
Rated voltage: 230V / 3 / 60Hz
SK 22
SK 25
—
Backup fuse [A]
50
63
—
Supply cable [mm
2
]
4x10
4x16
—
Current drawn [A]
42
53
—
Tab. 27 Supply details 230V / 3 / 60Hz
Rated voltage: 380V / 3 / 60Hz
SK 22
SK 25
—
Backup fuse [A]
32
40
—
Supply cable [mm
2
]
4x6
4x6
—
Current drawn [A]
24
32
—
Tab. 28 Supply details 380V / 3 / 60Hz
Rated voltage: 440V / 3 / 60Hz
SK 22
SK 25
—
Backup fuse [A]
25
32
—
Supply cable [mm
2
]
4x4
4x6
—
Current drawn [A]
21
27
—
Tab. 29 Supply details 440V / 3 / 60Hz
2
Technical Specifications
2.14 Power supply specifications
901848 21 E
Operating Manual Rotary screw compressor
SK
13
Summary of Contents for SK Series
Page 2: ...Original instructions KKW SSK 2 21 en SBA SCHRAUBEN SC2IO KKW SSC 2 08 20180629 105600...
Page 6: ...Contents iv Operating Manual Rotary screw compressor SK 901848 21 E...
Page 8: ...List of Illustrations vi Operating Manual Rotary screw compressor SK 901848 21 E...
Page 10: ...List of Tables viii Operating Manual Rotary screw compressor SK 901848 21 E...
